K2B2S7 — Properties & Data | MatWorld

K2B2S7

ceramic

· JVASP-19111· K2B2S7

K2B2S7 is a potassium boron sulfide ceramic compound representing a mixed anionic system combining borate and sulfide chemistry. This material belongs to an emerging class of sulfide-based ceramics that are primarily of research interest, with potential applications in solid-state ionic conductors, thermal management systems, or specialized optical components where conventional oxide ceramics have limitations. The combination of potassium, boron, and sulfide constituents suggests possible utility in solid electrolytes or other electrochemical applications where mixed-framework ceramics offer enhanced ion transport or chemical stability compared to traditional alternatives.

solid-state electrolytesthermal barrier coatingsresearch phase materialsspecialty ceramicselectrochemical deviceshigh-temperature composites

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	3,779.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	1,936.3	ksi	DFT · OptB88vdW

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Property	Value	Unit	Conditions	Source
Density(ρ)	0.07926	lb/in³	DFT · OptB88vdW

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Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.573	eV	DFT · OptB88vdW
↳	3.631	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.013	-	DFT · OptB88vdW
↳	4.006	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00148	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000459	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-305.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	296.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.7800	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.7476	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

K2B2S7

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental